17 Chrome

Also Known As

• Super 17 Chrome
• Super 17Cr
• SM17CRS®

Suitable Applications

Sweet (CO2) environments containing high chloride content, small amounts of H2S, and temperatures ≤ 392°F

Deep, high-pressure, high-temperature (HPHT), sweet (CO2) environments

Product Availability

FORMS:
Seamless Pipe, Tubing

OD:
MIN OD: 2-7/8”
MAX OD: 10-3/4”
Standard & Non-Standard Sizes Available

RANGE:
R1, R2, R3

17 Chrome

Datasheet

17CRS Applicable Environments17 Chrome is a quenched and tempered martensitic-ferritic stainless steel intended for corrosion resistance in sweet (CO2) environments with moderate chloride content, requiring high strength up to 400°F. 17 Chrome offers improved mechanical properties and increased resistance to the effects of CO2 , chlorides, pH, and temperatures when compared with standard 13 Chrome. The higher strength and temperature resistance, relative to Super 13 Chrome, allow it to be used in deeper wells with high-pressure and high-temperature (HPHT) conditions as downhole tubular components, packers, and other subsurface equipment.

17 Chrome may be considered as a cost-effective alternative to duplex stainless steels such as 22 Chrome for higher pressure and temperature HPHT conditions. However, all environmental factors, including H2S, CO2 , temperature, pH, and chloride concentration, should be considered before final material selection.

17 Chrome is not recommended for sour service.

Chemical Composition

CCrNiFeMnSiMoCuV
≤ 0.0316 - 184 - 5.5BAL≤ 0.5≤ 0.052 - 32 - 3≤ 0.1
(mass %)

Manufacturing Process

PROCESSDESCRIPTION
Steel MakingMade by electric furnace (EF) or basic oxygen furnace (BOF)
Pipe MakingManufactured by traditional hot tube manufacturing processes
Heat TreatmentQuenched and tempered

Specified Mechanical Properties

 
GradeYield
Strength
ksi
Tensile
Strength
ksi
Elongation
%
Hardness
HRC
NACE MR0175/ISO 15156
H2S Sour Service Limits
minmaxminminmax
125125145130Function of specimen size38Not recommended for sour serviceH2S ≤ 1.5 psi,
pH ≥ 3.5
*Non-standard mechanical properties and grades are made available upon agreement.

Typical Physical Properties

  70°F300°F400°F
Densitylbs/in30.280.280.28
Thermal ExpansionX10-6/°F6.16.16.1
Elastic Moduluspsi x 10628.127.326.7
Poisson Ratio0.320.320.29
Yield Strength De-Rating%1008885

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